Thermos 12-Ounce Stainless-Steel Tea Tumbler with Infuser (Discontinued by Manufacturer) Thermos vacuum insulation technology locks in temperature to preserve flavor and freshness; keeps liquids hot for 6 hours and cold for 10 hours durable 18/8 stainless steel interior and exterior withstand the demand of everyday use travel cover seals closed for carefree portability Infuser lid lets you brew tea right in the tumbler; Splash resistant drink lid lets you enjoy any beverage on the go Contoured body is comfortable to hold and fits most automobile drink holders; 12 ounce capacity